Trailer Idler Hub, 9000-10000 lb General Duty Axle, 8 on 6-1/2″, After July 2009



Dependable Trailer Idler Hub for 9K-10K Axles – Ideal for Heavy-Duty Use

  • Designed for 9K-10K Axles: Suitable for general duty trailers.
  • Specifications: 8 on 6-1/2″ bolt pattern, 5,000 lbs hub capacity.
  • Bearing Compatibility: Supports specific inner and outer bearings.
  • Robust Construction: Ensures durability and reliability.
  • Versatile Use: Ideal for Flatbed, Equipment, and Dual Tandem Trailers.
  • Additional Parts Required: Bearings, oil seal, and oil cap sold separately.

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Upgrade your heavy-duty trailers with the reliable and durable Trailer Idler Hub, designed for 9,000-10,000 lb general duty axles with an 8 on 6-1/2″ bolt pattern. This high-quality hub is a vital component for ensuring the safety and efficiency of trailers commonly used for transporting heavy equipment, large cargo, or for dual tandem applications.

Key Features and Specifications:

  • Axle Capacity: Suitable for 9,000-10,000 lbs general duty axles.
  • Hub Capacity: Each hub has a 5,000 lbs capacity.
  • Bolt Pattern: 8 on 6-1/2″, compatible with various wheel sizes including 16″ and 17.5″.
  • Wheel Studs: Equipped with 5/8″ wheel studs.
  • Bearing Compatibility: Requires Inner Bearing 387A (ID- 2.250″) and Outer Bearing 25580 (ID- 1.750″) – sold separately.
  • Races Included: Inner Race- 382A, Outer Race- 25520.
  • Oil Seal and Cap: Sold separately, Oil Seal 10-51 and Oil Cap 21-88 Oil Cap Kit.
  • Hub Pilot: Measures 4-3/4″.

Use Cases: Ideal for Flatbed Trailers, Equipment Trailers, and Dual Tandem Trailers, this idler hub is designed to handle heavy loads efficiently and reliably. It’s perfect for various applications, including construction, agriculture, and commercial transport.

Why Replace Just the Hub? Replacing only the hub instead of the entire axle is a cost-effective solution when the axle is still in good condition. This approach saves money and time, especially when the replacement hub, like this one, is designed to be a direct fit for specific axle types.

Installation Process and Measurements:

  • Preparation: Clean the axle spindle and inspect it for damage before installation.
  • Bearing Installation: Fit the bearings into the hub. Ensure the races are properly seated.
  • Hub Mounting: Slide the hub onto the spindle. It should fit snugly.
  • Securing the Hub: Install and tighten the lug nuts to the manufacturer’s specified torque.
  • Lubrication: Pack with high-temperature axle grease or fill with oil for oil bath systems.

The hub pilot measurement is 4-3/4″, and the bolt pattern of 8 on 6-1/2″ should match your wheel’s mounting configuration.

Tips for Installation:

  1. Confirm Compatibility: Ensure the hub matches your axle’s specifications.
  2. Gather All Parts: Have bearings, oil seal, and oil cap ready.
  3. Check Rotation: After installation, the hub should rotate smoothly without wobbling.
  4. Regular Maintenance: Regularly check and maintain the hub for prolonged service life.

Final Thoughts: This Trailer Idler Hub is an excellent choice for maintaining the functionality and safety of your heavy-duty trailer. Its compatibility with specific axle types and robust design make it a reliable and cost-effective replacement part.

Additional information

Weight 40 lbs
Dimensions 12 × 12 × 8 in


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